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Tom Barth
(248) 674.2325
1238 Irwin Drive - Waterford, MI 48327

Greenflag Karting TM Racing Reference Page

TM Main Page

Set Up Notes - Moto

On this page:
MX Specs - TM Comparison - Maintenance Schedules



TM MX Specs

Factory Data

MX80

MX125

Notes

IgnitionTiming

1mm (.03937")

1.3mm (.051")

Kokusan

Type Spark Plug

NGK 5 K OHM

NGK 5 K OHM

resistor type

Carburetor

Mikuni TM 32

Keihin PWM 38

.

Main Jet

220

178

use 200 main jet with needles shown below

Idle Jet

25

55

.

Idle Jet

25

52

using racing octane

Needle

6DL1-61

N 1 EC

125 use PGH (rich) or CEJ (lean) - clip in middle

Needle position

3

3

.

Needle position

3

2

using racing octane

Valve

3.5

6

(slide valve number)

Idle Screw

2 turns

1 - 1.5 turns

.

Spark Plug

BR9EG

BR9EG

.

Gap

0.7mm (.026")

0.7mm (.026")

.

Piston Clearance

0.06mm (.0024")

0.06mm (.0024")

Minimum clearance

Deck Height

0.75mm (.030")

1.7mm (.070")

Top of cylinder to top of piston at TDC

Volume

7.1cc

11.0cc

Combustion Chamber

Squish

0.9mm (.035")

0.9mm (.035")

Dimension between squish band to piston at TDC

Clutch

5/6

7/8

ferrous / friction - friction 1.5mm (.059")

Transmission capacity

.7 liter (.74 qt)

.7 liter (.74 qt)

.

type oil

ATFII

ATFII

Dexron, Mobil 1, Sunoco etc.

Gas/Oil mixture

3%

3%

2% using racing octanes

.

.

.

.

Transmission

Ratio

.

.

1

14/32

.

.

2

16/28

.

.

3

18/27

.

.

4

20/25

.

.

5

22/24

.

.

6

23/22

.

.

.

.

.

.

Primary

19/63

.

.

.

.

.

.

Please recognize that these specs are for motocross only application.

.


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TM Comparison

Metrics

KV95

K9B

MOTO

Ignition Timing

108> 1.2mm

1.6mm

1.0 - 1.2mm

.

100< .9 to 1.0

.

.

Combustion Chamber Volume

11.8 - 12.0cc

11cc

10.0 - 11.0cc

Exhaust Port Height

std

std

33mm

Piston to Bore Clearance

.07-.75mm

.07-.75mm

.06-.065mm


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Maintenance Schedules

Maintenance

KV95

K9B

Moto

Piston & ring

20L

30L

30L

Rod

120L

120L

120L

Crankshaft bearings

60L

60L

60L

Piston pin & bearing

60 - 70L

60 - 70L

60 - 70L

Rod bearing

120L

120L

120L




 
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